Research suggests that peace and quiet after learning can help memory consolidat
ID: 3048096 • Letter: R
Question
Research suggests that peace and quiet after learning can help memory consolidation. To test whether this is true, a researcher recorded the length of time that 10 high-performing students spent in peace and quiet after classes each day for 2 weeks. The data are listed in the table.
(a) Use SPSS to calculate the mean and standard deviation of this sample. (Round your answers to two decimal places.)
(b) Calculate a 95% confidence interval for the mean that you calculated in (a). (Round your answers to two decimal places.)
between and minutes
(in minutes) 2 10 16 35 21 7 97 105 130 55
Explanation / Answer
The statistical software output for this problem is:
Summary statistics:
One sample T confidence interval:
: Mean of variable
95% confidence interval results:
Hence,
a) Mean = 47.8 minutes
Standard deviation = 46.65 minutes
b) 95% confidence interval:
Between 14.43 and 81.17 minutes
Column Mean Std. dev. Peace and Quiet Per Day 47.8 46.649521Related Questions
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